We have calculated the decay width of the process t→g~t~1 including one loop QCD corrections. We found that the decay width of the such process could be comparable with that of the standard channel t→bW+, and, its QCD correction could enhance the widths over 30% in a very large mass range of the lighter stop.
@article{arxiv.hep-ph/9811430,
title = {Top decays into lighter stop and gluino},
author = {Lian You Shan and Shou Hua Zhu},
journal= {arXiv preprint arXiv:hep-ph/9811430},
year = {2007}
}